Question: What is the twinned administrative body of Ljubljana that started at 1997-1-1?
Paraphrase: Explain and name the twinned administrative body of Ljubljana that started January 1, 1997.
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q437 p:P190 ?s . ?s ps:P190 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1997')) }